NEWTOWN, Conn. A shooting at a Connecticut elementary school Friday left at least one child and the gunman dead, at least one teacher wounded and sent frightened pupils into the parking lot.

CBS News has confirmed at least one child is died and a law enforcement official told CBS News that "one gunman is dead" in the shooting. It is unclear if there was more than one gunman at the school.

Law enforcement sources told CBS News senior correspondent John Miller that preliminary and unconfirmed information indicates that the shooter was the father of a student.

The shooter was killed and apparently had two guns, a person with knowledge of the shooting told The Associated Press. The person spoke on condition of anonymity because the investigation was still under way.

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It wasn't clear how many people were injured at Sandy Hook Elementary School in Newtown. CBS Hartford affiliate WFSB-TV reports around 600 students attend the school.

Connecticut State Police spokesman Lt. Paul Vance described the situation to CBS New York station WCBS-AM as a "very serious school shooting."

A dispatcher at the Newtown Volunteer Ambulance Corps said a teacher had been shot in the foot and taken to Danbury Hospital.

Stephen Delgiadice said his 8-year-old daughter heard two big bangs and teachers told her to get in a corner. His daughter was fine.

"It's alarming, especially in Newtown, Connecticut, which we always thought was the safest place in America," he said.

Lisa Bailey, a Newtown resident with three children in Newtown schools, told CBSNewYork.com, "Newtown is a quiet town. I'd never expect this to happen here. It's so scary. Your kids are not safe anywhere."

The superintendent's office said the district had locked down schools in Newtown, about 60 miles northeast of New York City. Schools in neighboring towns also were locked down as a precaution.

State police said Newtown police called them around 9:40 a.m.

A photo posted by The Newtown Bee newspaper showed a group of young students — some crying, others looking visibly frightened — being escorted by adults through a parking lot in a line, hands on each other's shoulders.

Students were taken to a nearby firehouse to be reunited with their parents, CBSNewYork.com reports.

OMG 27 DEAD!!! 17 ARE KIDS WTF. ERRRRRRRRRRRRR NOW LIKELY ONLY ONE SHOOTER MEDIA NEEDS TO GET IT STRAIGHT THEN REPORT.

Twenty-seven people, including 18 children, have been killed in a shooting at Sandy Hook Elementary School, according to the Associated Press.

The Hartford Courant reports that many of the shootings took place in a kindergarten classroom.

One entire classroom is unaccounted for, sources told the newspaper.

A person believed to be a shooter is dead. Earlier reports of a second shooter were not confirmed.
Three people were taken to Danbury Hospital, but their condition was unknown. The emergency room was on lockdown.

Around noon, the triage area in front of the school was broken down, stretchers were taken away and the SWAT team left the building.

Shortly after 9:40 a.m., police reported that a shooter was in the main office of the school. A person in one room had “numerous gunshot wounds,” police said.

Groups of students — some crying, some holding hands — were being escorted away from the school by their teachers.

A staging area was set up at the Sandy Hook Fire Department, directly in front of the school.

One child leaving the school told the Courant that there was shattered glass everywhere.

A police officer ran into the classroom and told them to run outside and keep going until the reach the firehouse.

School and local emergency officials are accounting for the children, who will be released to their parents to get them home.

Dozens of state troopers were on the scene assisting local police. Check back for updates on this developing story.

DEVELOPING: Authorities say at least 26 people, including 18 children, were killed Friday when a gunman opened fire inside a Connecticut elementary school.

A law enforcement official said the shooter, who is dead, is believed to be a father of one of the students at Sandy Hook Elementary School in Newtown. Authorities recovered a Glock and Sig Sauer 9mm handgun, but it was unclear who killed the shooter, who wore black combat garb and a military vest.

An official with knowledge of the situation said the man, described as in his 20's, had two guns. The motive is not yet known.

Earlier reports of a second gunman are unconfirmed. The Connecticut Post reports that police are also questioning a handcuffed man in connection with the shooting. Witnesses told the newspaper he was led out of the woods by officers.

Shortly after 9:40 a.m., authorities reported that a shooter was in the main office of the school. A person in one room had "numerous gunshot wounds," police told the Hartford Courant.

A dispatcher at the Newtown Volunteer Ambulance Corps said a teacher was shot in the foot and taken to Danbury Hospital. Local news outlets also reported that the principal was among those shot.

Parent Lisa Procaccini told Fox News that her daughter was sitting in a classroom when she and others heard gun shots.

"She was in a small class -- a reading group and they started hearing bangs," Procaccini said. "Her teacher, and I’m grateful for this, rushed kids into the bathroom and locked the door. They told kids it was hammering and tried to keep them calm.”

"Children were crying," Procaccini said. "She did tell me about a little boy that was in a police officer’s arms, bleeding. I don’t know if she gets it."

The Bureau of Alcohol, Tobacco, Firearms and Explosives said two firearms were recovered from the scene.

President Obama was notified of the shooting around 10:30 am ET, White House officials said.

The Newtown School District has locked down schools as a preventive measure to ensure the safety of students and staff.

A statement on the district's website stated that afternoon kindergarten classes have been canceled.

The elementary school has close to 700 students.

Newtown is in Fairfield County, about 45 miles southwest of Hartford and 60 miles northeast of New York City.

The Hartford Courant is reporting police have responded to a shooting at Sandy Hook Elementary School in Newtown, Connecticut. Local police say they got a call around 9:40 this morning about a shooter in the school's main office.

Right now, very little information has been released, but the Courant is reporting there were two shooters, one is dead, the other may still be at large. Several people are reportedly injured as well.

Newtown has a population of about 27,000 and is located in western Connecticut.

UPDATE 10:46 AM: NBC Connecticut is streaming live coverage on its website, including phone interviews with parents who have children who attend Sandy Hook Elementary.

UPDATE 11:00 AM: A Danbury Hospital official confirms three patients have been admitted from the scene at Sandy Hook Elementary. She would not say whether their injuries were gunshot wounds, however.

UPDATE 11:14 AM: NBC Connecticut just aired a live interview with a parent who claimed she'd been told the school's principal was shot and is dead. That report is not confirmed.

UPDATE 11:22 AM: NBC New York is reporting there has only been one fatality so far, the shooter.

UPDATE 11:31 AM: NBC Nightly News reports the shooter was an adult and two handguns have been recovered from the scene at Sandy Hook Elementary.

UPDATE 11:51 AM: The Associated Press reports a teacher was also wounded in the shooting and the Hartford Courant is now reporting there were "multiple deaths" as a result of the shooting. Police are supposed to give more information at a news conference at 1:00 p.m. EST.

UPDATE 11:52 AM: The Hartford Courant has confirmed that children are among the dead after this morning's shooting.

UPDATE 11:58 AM: Neighboring schools are also on lockdown. Reddit has a thread by someone who claims to be in one of those schools right now.

UPDATE 12:15 PM: CBS News has learned the gunman was possibly the father of a student at Sandy Hook Elementary.

UPDATE 12:32 PM: Federal law enforcement is now saying there were more than a dozen people shot and killed this morning.

UPDATE 12:53 PM: The Associated Press now cites an anonymous official who 27 people are dead, 18 of them are children. Columbine's death toll was 15; 32 died in the Virginia Tech massacre.

UPDATE 1:15 PM: The latest information on the shooter is that he was 20 years old. It's still unclear what his connection to the school was.

UPDATE 1:20 PM: SWAT is now searching the home of the suspected second shooter.

And if one Faculty member had been carrying concealed rather than this bullshit of "gun free zones" it could have been an entirely different story.....I notice none of these dirtbags are pulling this shit in my neck of the woods......Georgia........everyone I know carrys.....most concealed...but some not....and I notice people printing all the time.....

We know what's coming. The anti-gunners like Mikey Bloomberg and others are going ape shit over this and calls are being made for Barack to push for more restrictions as they push for more "gun control". Where's Bob Costas?

I just added a few more crates of ammo and another AK-74 clone. May be adding more this afternoon but I suspect that firearms and ammo will be flying off the shelves again. I heard a couple talking heads on TV talking about gun control. This will push sales higher of course.

When you're born you get a ticket to the freak show. When you're born in America , you get a front row seat. - George Carlin